science

Study links respiratory compensation point power to cycling performance.

A study of 28 trained male cyclists found that relative cycling power at the respiratory compensation point had the strongest independent association with 19.2-kilometer time-trial completion time. The finding came from a roughly 30-minute virtual test and a male-only trained-cyclist sample.

A participant in a metabolic mask runs on a treadmill while an exercise physiologist monitors the test
Photo: U.S. Air Force photo by Airman William Tracy / Wikimedia Commons, Public domainphotographer license

Researchers tested 28 trained male cyclists in a roughly 30-minute, 19.2-kilometer virtual time trial on their own road bikes using smart trainers. A step-ramp-step (SRS) protocol measured physiological variables before and after the trial, including power at the respiratory compensation point (RCP).1

Relative SRS-corrected power at RCP had the strongest independent correlation with completion time (r = −0.61, p < 0.001). In the multilinear regression model, SRS-corrected RCP uniquely explained 30.9% of the model’s predictive variance.1

The authors described the protocol as a practical single-session way to assess performance determinants for training prescription and athlete monitoring, while the results were limited to trained male cyclists.1

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